SCHMIDT Flow Sensor SS 25.60

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1 Product description Product advantages Form 107/06/09/1000/3 Art. No A Data subject to change The flow sensor is a mass flow sensor (thermal anemometer), designed for use in oxygen. Due to a careful cleaning during production and packaging of the sensor according to the standard IEC/TR 6077:1999, the sensor can be used in gas mixtures with an oxygen percentage of at least 21 % or in pure oxygen. Application examples n Consumption measurement n Process control n Burner control n Welding and cutting technology Danger warning! Danger warning: RISK of FIRE and EXPLOSION Read and observe the following information! It is explicitly pointed out that the customer, when opening the packaging assumes full responsibility for the cleanliness of the sensor and its accessories according to the standard IEC/TR 6077:1999. n High temperature gradient permissible n Electronic temperature compensation active in the whole range of operating temperatures n Very high turn down ratio of up to 1 : 1000 n Easy, cost-saving mounting n Pressure-proofed up to 16 bar n Digital output for connection to supply meter or energy management systems n Signaling of sensor state (flow velocity in 6 stages or fault) via 4 double LED s n Optionally with integrated field bus interface Information concerning the handling The general rule applies that a soiling of sensor parts that come into contact with oxygen must be absolutely avoided: n The installation site must be carefully cleaned before mounting the sensor. n Make sure to use only clean tools and material for the installation. n Before opening the packaging film, remove the dirt such as dust from the film, if necessary. n If possible, open the packaging film and take out the sensor directly at the installation site. n Otherwise open the packaging film at an appropriate and clean workplace and store the sensor in an appropriate, cleaned and dust and humidity tight container. n Do not touch the oxygen contacting sensor parts with bare hands. n Use clean and non-fluffy gloves or cloths or similar to handle the sensor. SCHMIDT Technology GmbH Feldbergstraße 1 D-7112 St. Georgen Germany Telefon +49 (0)7724/99-0 Telefax +49 (0)7724/ info@schmidttechnology.de 1

2 Product model types SS Standard sensor with analog + digital output Measuring ranges: up to 200 m/s Signal outputs: 1 analog, 1 digital SS FB Design Remote Sensor Field bus sensor with bus interface integrated in the electronic housing Measuring ranges: up to 160 m/s Signal outputs: 1 analog, 1 digital Field bus: PROFIBUS DP (V0) or DeviceNet Additional functions: calculation of volume flow, monitoring of threshold value The above mentioned models can be delivered, as shown in the picture, as so-called compact sensors or as remote sensors. The remote sensor differs in the following characteristics: 3 m cable between sensor and electronics, firmly fixed on both sides Temperature of the medium up to 60 C Only for operation under atmospheric pressure Dimensions Compact Sensor Dimensions Remote Sensor 7,2 L 17 39, , Ø 9 Ø 15 G 1/2 Ø 67,3 12,5 Ø 26 36,5 26,5 16 SW ,2 SW 27 SW 24 2 Flow SW 32 l = 5 m Ø 5 Dimensions Compact Sensor FB Dimensions Remote Sensor FB ,2 L 17 2,5 Ø 9 29,2 1 Ø 15 G 1/2 12 Ø 26 4 Ø 67,3 Ø 75 79,5 26,5 16 SW ,5 15,2 SW 27 SW 24 Flow 2 SW 32 All dimensions in mm (if not otherwise noted) 2

3 Technical data Measuring quantity Measuring fluid standard flow velocity w N normalized to ϑ N = 20 C and p N = hpa air or nitrogen other gases on request Measuring range (w N) m/s / ft/s m/s / ft/s m/s / ft/s 0 60 m/s / ft/s 0 40 m/s / ft/s 0 20 m/s / 65.6 ft/s 0 10 m/s / 32. ft/s m/s /.2 ft/s Lower range limit 0.2 m/s 0.66 ft/s Lower detection limit 0.1 m/s 0.33 ft/s Measuring inaccuracy ±(3 % of measurement value % of measuring range) Repeatability ± 0.5 % of measurement value Response time (t 90) 3 s (0 to 5 m/s transient) Operating temperature - Compact sensor C - Remote sensor C - Electronics C Storage temperature C Humidity range % RF Pressure range - Atmospheric hpa - Overpressure bar (only compact sensor) Temperature gradient Recovery time constant w N = 5 m/s 6 s at temperature jump ϑ air = 40 K, w N = 5 m/s Temperature dependence compensated within the operating temperature range Pressure dependence independent of medium pressure within pressure range Zero offset compensation pressure dependent adaptation of characteristic line Supply voltage U B 24 V DC ± 20 % Current consumption Standard 75 ma w N = 0 m/s 140 ma w N = 200 m/s Fieldbus 250 ma w N = 160 m/s Switch-on current Standard Fieldbus Stabilization time 160 ma for max. 5 s 270 ma for max. 5 s approx. 10 s after switch-on 1) Output with error indication according to NAMUR NE43 (error signaling current 2 ma) 2) Tube throughpassage and safety chain are included in delivery of compact sensors. Remote sensors will solely be delivered with tube throughpassage. Electrical connection standard sensor Electrical connection plug-in connector M12, 4-pin including connection cable with plug, 4 x 0.34 mm², pigtail with wire end sleeve Cable length (standard) 5 m Cable length (adm.) Voltage output 15 m Current output 100 m Digital output 100 m Analog output selectable when ordering Type voltage V Type current 0 / 4 1) ma Load resistance (adm.) Voltage output 10 kω Current output 400 Ω Digital output Digital output frequency Digital pulse duration pulse output high level: low level: load resistance: U B-3 V < 0.7 V 2 kω Hz Hz Hz Hz Hz (selectable when ordering) min. 1 / (2 x f max) Other features Housing aluminium anodised Probe tube stainless steel Sensor head thermoplast PPO/PA Sensor element platinum resistor element, glass passivated Mounting tube throughpassage, stainless steel , pressure-proofed, probe tube adjustable, mounting thread G 1/2 x 12 Mounting tolerance Installation position ± 5 relative to flow direction as desired, for vertical downdraft flow lower range limit approx. 2m/s Dimensions Standard housing 67.3 mm x 56.5 mm ( x H) Housing field bus 67.3 mm x mm ( x H) Sensor head mm x 15.2 mm x 12.5 mm (W x H x D) Probe tube 15 mm ( ) Mounting length (L) Compact probe Remote probe Weight Protection type 120 / 10 / 250 / 400 mm optionally 190 mm, remote from housing, with 3 m connection cable firmly fixed 450 g max. (without cable) 00 g ( FB) IP 65 (housing) IP 67 (sensor head + tube) SCHMIDT Technology GmbH Feldbergstraße St. Georgen im Schwarzwald Germany Telefon +49 (0) 77 24/ 99-0 Fax +49 (0) 77 24/ info@schmidttechnology.de 3

4 Pin assignment and FB wh bn bk bl Digital + 24 VDC Analog GND Digital output bk wh bn bl analog output U B View on sensor plug pins. Color assignment of connection cable : wh = white, bn = brown, bk = black, bl = blue Minus pole of supply voltage (GND) is also reference potential for analog signal. LED display The standard version of (not version FB) has a 4-fold double LED status display. The following states are indicated: No. state LED 1 LED 2 LED 3 LED 4 No. state LED 1 LED 2 LED 3 LED 4 1 operational & flow < 5 % supply voltage too low 2 operational > 5 % 9 supply voltage too high 3 operational > 20 % 10 temperature of electronics too high 4 operational > 50 % 11 temperature of electronics too low 5 operational > 0 % Legende 6 operational > 100 % = Overflow LED off LED on: orange 7 sensor element defective LED on: green LED flashes (approx. 2 Hz): Field bus interface DeviceNet Standardization ISO / DIS 11 9 DeviceNet specification volume I + II release 2.0 Electrical connection Terminal resistor Baud rate -pin screw-type terminal inside the housing cable feed via 3 cable bushings The terminal resistor (120 Ohm, 0.25 W) is disabled on delivery and can be switched in by a single-pole DIP switch. 125 / 250 / 500 kbit/s, default value 125 kbit/s, adjustable via DIP switches or by software Address , default value of address 63 (MAC ID 63), can be configured via rotary switch or by software Operating modes Process data Switch thresholds Warning flag Alarm flag Status display poll mode, Change of State (COS), cyclic 32 bit; volume flow, alternatively flow velocity selectable upper and lower switch threshold adjustable for flow velocity and volume flow signal when exceeding measuring range signal of a defective sensor two-color LED indicates status of field bus com- Field bus interface PROFIBUS DP Standardization PROFIBUS standard EN Electrical connection -pin screw-type terminal inside the housing cable feed via 3 cable bushings Terminal resistor The activated network terminal resistor ( Ohm) is disabled on delivery and can be switched in by a two-pole DIP switch. Baud rate 9600 Bd 12 MBd, automatic adjustment by PROFIBUS master Address , adjustable via BCD rotary switch Operating modes "Data Exchange" to PROFIBUS DP-V0 Process data 32 bit; volume flow, alternatively flow velocity selectable Switch thresholds upper and lower switch threshold adjustable for flow velocity and volume flow Warning flag signal when exceeding measuring range Alarm flag signal of a defective sensor Status display two-color LED indicates status of field bus communication 4

5 Pin assignment DeviceNet interface Electrical connections (screw-type terminals) 1 CAN_L CAN_H ON DRAIN DRAIN CAN_L CAN_H UB GND Pos. Cable color Solder pin/terminal Explanation 1 blue CAN_L CAN negative data line (dominant low) 2 white CAN_H CAN positive data line (dominant high) 3 without drain (CAN_SHLD) shield connections 4 without drain (CAN_SHLD) shield connections 5 blue CAN_L CAN negative data line (dominant low) 6 white CAN_H CAN positive data line (dominant high) 7 red U B (24 V ±20 %) supply voltage black GND connection to earth Pin assignment PROFIBUS interface Electrical connections (screw-type terminals) 1 2 ON ON A B UB GND A B UB GND Pos. Solder Explanation 1 A negative serial data line 2 B positive serial data line 3 U B supply voltage (24 V ±20 %) 4 GND connection to earth 5 A negative serial data line 6 B positive serial data line 7 U B supply voltage (24 V ±20 %) GND connection to earth Process data field bus modules The process data are transmitted to the bus master via the the field bus. According to the adjusted function, you will obtain the flow velocity or the volume flow in a 32-bit representation of integers (only positive values). Optionally, a further byte can be transmitted which is transmitting the limit value, the alarm flags and the warning flags. Parameters Meaning Value range Default value Flow velocity measured flow velocity w N of medium (16 bit) 0 Volume flow volume flow calculated from flow velocity (32 bit) Lower flag lower switch threshold L U 0: w N L U 0 not reached 1: w N < L U Upper flag upper switch threshold L O 0: w N L O 0 exceeded 1: w N > L O Warning flag measuring range M N exceeded 0: w N M N 0 1: w N > M N Alarm flag sensor defective 0: OK 0 1: Error SCHMIDT Technology GmbH Feldbergstraße St. Georgen im Schwarzwald Germany Telefon +49 (0) 77 24/ 99-0 Fax +49 (0) 77 24/ info@schmidttechnology.de 5

6 Calculation of volume flow in the field bus module The sensor with field bus interface can convert the measured flow velocity w N in a standard volume flow V N. if the correct inside diameter ID has been communicated to the sensor before. The necessary profile factors PF for the conversion are permanently stored in the sensor. For this the following information is required: bore diameter of measuring tube (profile factor is deposited in the sensor), in order to find out the volume flow rate in m 3 /s (conversion fac-tor: CF). In order to convert into other measurements a unit factor is required (unit factor see adjoining scale). Supported unit factors: position unit factor 1 [m 3 /min] 2 [m 3 /h] 3 [l/s] 4 [ft 3 /min] 5 [ft 3 /h] CF = Π (ID/2) 2 PF V n = w N UF CF Mounting instructions Ø ID Mounting parameters DA AL 1) SL = welding stud length D A = tube outside diameter 57 E = probe tube setting length AL = compact sensor projecting length R = reference length L = probe tube mounting length Recommended welding stud length: min. 10 mm, max. 30 mm 1) 104 for FB All dimensions in mm DA /2 SL L R 36 E Formula for calculation: Which probe length is at least necessary? L > D A /2 + SL + 36 mm Where must the immersion mark be placed at the probe tube? E = L - D A /2 - SL - 36 mm How much does the sensor projects out of the tube? AL = L - D A / mm For FB: AL = L - D A / mm 6

7 Selection table probe length Probe length Recommended for tubes from diameter Suitable for tubes up to When installing through ball valve for tubes up to 120 mm DN 25 / 1" DN 65 / 2 1 / 2" 10 mm DN 50 / 2" DN 150 / 6" DN 25 1) / 1" 250 mm DN 100 / 4" DN 300 / 12" DN 125 / 5" 400 mm DN 250 / 10" DN 00 / 32" DN 450 / 1" 1) only if welding stud length = 10 mm Mounting measurements and measuring ranges for measuring tubes Tube diameters + corresponding PF Mounting measurements Measuring range of volume flow in m 3 /h for sensor measuring range DN Inside Outside PF L AL E R 60 m/s 120 m/s 160 m/s 200 m/s ,994 15, ,205 25, ,66 27,336 36, ,474 32,947 43, ,670 43,339 57, ,440 54,1 73, ,059 6,119 90, ,216 2, , ,51 99, , All dimensions in mm Calculation volume flow 3 m m ID[ mm] 2 V N [ ] wn[ ] PF ( ) 0,0036 h s 2 V N: standard volume flow w N: standard flow velocity PF: profile factor ID: tube diameter inside Unit conversion factors 1 m 3 /h ft 3 /h 1 mm inch 1000 ft 3 /h m 3 /h 1 inch 25.4 mm SCHMIDT Technology GmbH Feldbergstraße St. Georgen im Schwarzwald Germany Telefon +49 (0) 77 24/ 99-0 Fax +49 (0) 77 24/ info@schmidttechnology.de 7

8 Accessories ISO Calibration Certificate SS air consumption-display module Power supply unit 24 V DC supply 115 / 230 V AC Coupler socket 4-pin, with screw terminals Spare parts Connection cable, 4 pins, length 5 m length 10 m Through bolt joint G ½ x 12, stainless steel , with Viton sealing, multi-removable Order information Article number: Description: K X Y Z S F DD Flow sensor Order key: K X Y Z S F DD = type = probe tube mounting length = measuring range = analog output type = digital output type = digital output frequenzy = operating overpressure Note for scope of delivery: Design of compact sensor: Design remote sensor: with through bolt joint (511 95) and safety chain with through bolt joint (511 95) with connection cable ( ), 4 pins, length 5 m FB: with CD ROM with EDS- / GSD-file, without connection cable Type Mounting length Measuring Analog Digital Digital output Operating range output output frequency overpressure 1) K X L Y w N Z S F DD 1 Standard mm m/s V 1 Pulse output Hz 00 0 bar 2) 2 DeviceNet with 2 10 mm m/s ma Hz 01 1 bar cable bushing mm m/s ma 3) Hz 02 2 bar 3 PROFIBUS DP with mm m/s Hz cable bushing mm / 3 m 4) ,5 m/s Hz DeviceNet with m/s bar plug connection m/s 5 PROFIBUS DP with plug connection m/s 1) Operating overpressure of the medium to be measured at the installation place 2) Atmospheric air pressure 3) Option with field bus not possible 4) Measuring range > 60 m/s not possible, only for operation under atmospheric pressure Other configuration on request